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........................................... Duchesne River Adultfish monitoring Table 3. Electrofishing catch per mile by study reach, all years (1997-1999) combined. Spring and Fall sampling consisted of electrofishing the entire length of the study reaches; summer collections consisted of sampling 2-3 mile Myton, Uintah, and Ouray subreaches. Spring Summer Fall Species 1 2 3 1 2 3 1 2 3 Colorado pikeminnow Ptychocheilus /ucius 0.] 5 0.10 0.02 0.]3 0.20 0.10 0.00 0.00 0.00 Razorback sucker Xyrauchen texanus 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Flannelmouth sucker Catostomus latippinus 4.23 2.87 4.87 3.60 6.60 13.80 1.72 0.00 2.72 Bluehead sucker Catostomus discoholus 0.38 0.35 0.50 0.07 0.90 1.10 0.]4 0.] 1 O. ]8 Mountain whitefish Prosopium williamsoni 0.01 0.65 2.66 0.00 0.00 0.00 0.00 0.45 1.58 Common carp Cyprinus carpio 3.30 2.33 3.78 7.40 25.10 14.30 6.69 3.26 3.25 Channel catfish Ictaluris punctatus 1.81 1.47 0.61 1.13 2.40 4.40 0.00 0.00 0.00 Smallmouth bass Micropterus dolomieu 0.54 0.45 0.68 0.73 1.80 2.90 0.07 0.00 0.18 Lepomis 1 0.03 0.03 0.02 0.13 2.10 2.80 0.00 0.00 0.00 White sucker Catostomus catostomus 0.30 1.80 3.68 1.33 1.90 18.70 0.34 0.45 3.68 Northern pike Esox lucius 0.0] 0.01 0.03 0.07 0.00 0.00 0.07 0.00 0.00 Salmonids2 Salmo & Oncorhynchus 0.05 0.18 0.58 0.07 0.10 0.10 0.14 0.11 0.18 Unidentified suckers3 0.03 0.11 0.05 0.00 0.00 0.00 0.00 0.00 0.00 Others4 0.02 0.03 0.07 0.07 0.00 0.80 0.00 0.00 0.00 I Green sunfish 1. cyanella, bluegill 1. maculatus, black crappie Pomoxis nigromaculatus 2 Brown trout, Salmo trutta rainbow trout, Oncorhynchus mykiss cutthroat trout 0. clarki 3 Unidentified and hybrid suckers 4 Black bullhead Amierus melas, Utah chub Gila atraria, roundtail chub G. robusta, grass carp Ctenopharyngodon idella 18